Passive immunity can occur naturally, such as when an infant receives a mother's antibodies through the placenta or breast milk, or artificially, such as when a person receives antibodies in the form of an injection (gamma globulin injection). Related Theory A vaccine may also confer passive immunity by providing antibodies or lymphocytes already made by an animal or human donor. Vaccines are usually administered by injection (parenteral administration), but some are given orally or even nasally (in the case of flu vaccine).
Short-lived immunity acquired from mother to foetus across placenta or through mother's milk to the infant is categorised as:
NEET UG 2003 — Zoology Human Health and Diseases
2003mcqhard
Short-lived immunity acquired from mother to foetus across placenta or through mother's milk to the infant is categorised as:
Official previous-year question
Held on 30 Apr 2003 · Verified 9 Jul 2026.
Options
- A
active immunity
- B
passive immunity
- C
cellular immunity
- D
innate non-specific immunity
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